Numpy 中clip函数的使用

numpy.clip(a, a_min, a_max, out=None)

Clip (limit) the values in an array. 
Given an interval, values outside the interval are clipped to the interval edges. For example, if an interval of [0, 1] is specified, values smaller than 0 become 0, and values larger than 1 become 1.

一维数组

其中a是一个数组，后面两个参数分别表示最小和最大值

import numpy as np
x=np.array([1,2,3,5,6,7,8,9])
np.clip(x,3,8)Out[88]:array([3, 3, 3, 5, 6, 7, 8, 8])12345

多维数组

x=np.array([[1,2,3,5,6,7,8,9],[1,2,3,5,6,7,8,9]]) 
np.clip(x,3,8)

Out[90]: 
array([[3, 3, 3, 5, 6, 7, 8, 8], 
[3, 3, 3, 5, 6, 7, 8, 8]])